L6590D STMicroelectronics, L6590D Datasheet - Page 2

• Manufacturer Part Number: L6590D
• Description: IC SWIT OVP OCP 16SOIC
• Manufacturer: STMicroelectronics

Specifications of L6590D

• Output Isolation: Isolated
• Frequency Range: 52 ~ 74kHz
• Voltage - Input: 6.5 ~ 18 V
• Voltage - Output: 700V
• Power (watts): 15W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 16-SOIC (0.300", 7.50mm Width)
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L6590
DESCRIPTION (continued)
The MOSFET is source-grounded, thus it is possible
to build flyback, boost and forward converters.
The device can work with secondary feedback and a
2.5V±2% internal reference, in addition to a high gain
error amplifier, makes possible also the use in appli-
cations either with primary feedback or not isolated.
The internal fixed oscillator frequency and the integrated
non dissipative start-up generator minimize the external
component count and power consumption.
The device is equipped with a standby function that
automatically reduces the oscillator frequency from
65 to 22 kHz under light load conditions to enhance
BLOCK DIAGRAM
PIN CONNECTIONS (Top view)
2/23
DRAIN
COMP
N.C.
Vcc
[9, ..., 16]
(6,7,8)
PGND
GND
MINIDIP
L6590
DRAIN
(1) [1]
SHUTDOWN
START-UP
THERMAL
STANDBY
+
-
OCP
GND
GND
GND
VFB
65/22 kHz
OSC
SUPPLY
& UVLO
efficiency (P
mains).
Internal protections like cycle-by-cycle current limiting,
latched output overvoltage protection, mains undervolt-
age protection (SMD version only) and thermal shut-
down generate a 'robust' design solution.
The IC uses a special leadframe with the ground pins
(6, 7 and 8 in minidip, 9 to16 in SO16W package) in-
ternally connected in order for heat to be easily re-
moved from the silicon die. An heatsink can then be
realized by simply making provision of few cm
copper on the PCB. Furthermore, the pin(s) close to
the high-voltage one are not connected to ease com-
pliance with safety distances on the PCB.
DRAIN
COMP
SGND
PWM
BOK
N.C.
N.C.
VFB
[x] : L6590D (SO16W)
Vcc
VREF
BROWNOUT
OVP
COMP
(4) [7]
+
-
VREF
in
+
-
-
+
SO16W
L6590D
< 1W @ P
2.5V
2.5V
(3) [4]
SGND
BOK
(5) [8]
VCC
VFB
[6]
[5]
out
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
= 0.5W with wide range
2
of